it does not solve the deficit. it is not a serious deficit proposal. the credit rating agencies are looking for a plan that lowers the gdp to debt ratio. i do not think there is a magic number. social security, medicare, to find a sustainable path for word on them. do you think the president's plan adequately addresses the sustainability of medicare and social security? >> >> i think he needs to go further. i do not think it is enough. i believe the proposals are good ones. i think they are hard proposals to make because they're substantive. to achieve fiscal sustainability in the context of $3 trillion in 10-year deficit reduction, i think we need to do more. >> looking at the republican plan and the present proposal, do you see any common ground? -- and the president's proposal, do you see any common ground? >> the common ground is that we're looking at the same proposals. cbo has scored a number of different approaches. i also think there is no general agreement in the context of the current discussion, we will not make any major structural changes